Evaluate hosted deployment platform for Clojure

Heroku has shut down free accounts and free dyno access from Autumn 2022, therefore an alternative service is required if Practicalli Web Services book is going to include deployment.

Heroku is an excellent platform for deploying Clojure and could build Clojure projects from source as well as deploy a war file. There was also CI pipeline support, for deploying to multiple environments, e.g. acceptance, staging, production.

Heroku was easy, just create a new Heroku app and give it the URL of your code repository, e.g. GitHub repo.

Evaluate alternative to Heroku

• equivalent ease of use to Heroku
• support for deploying Clojure CLI configured apps
• support for Circle CI deployment (e.g. heroku orb, render orb, etc)
• any constraints over that of Heroku

Services to review

• amazon (should be free if you are very careful, more complex service to use)
• render.com
• fly.io
• Jelastic - example blog post

Review the listed alternatives—Amazon, Render, Fly.io, and Jelastic—against the stated Heroku requirements. Check Clojure CLI deployment, CircleCI integration, ease of use, and constraints for each service. Done means documenting a recommended alternative and the relevant trade-offs for the Practicalli Web Services book.